Wet brake assembly

摘要

A brake assembly for a mobile machine is disclosed. The brake assembly may have a stationary housing forming a coolant inlet and a coolant outlet, a rotatable member, and a disc stack disposed within a cavity at least partially formed by the stationary housing and the rotatable member. The disc stack may have a plurality of friction plates operatively coupled to the rotatable member and a plurality of separator plates interleaved with the plurality of friction plates and operatively coupled to the stationary housing. The brake assembly may also have a piston disposed within the cavity and configured to compress the disc stack, and a seal located at an axial interface between the stationary housing and the rotatable member and downstream of the disc stack relative a flow of coolant from the coolant inlet to the coolant outlet.

主权项

1. A brake assembly, comprising:
a stationary housing forming a coolant inlet and a coolant outlet; a rotatable member; a disc stack disposed within a cavity at least partially formed by the stationary housing and the rotatable member, the disc stack having a plurality of friction plates operatively coupled to the rotatable member and a plurality of separator plates interleaved with the plurality of friction plates and operatively coupled to the stationary housing; a piston disposed within the cavity and configured to compress the disc stack; a seal located at an axial interface between the stationary housing and the rotatable member and downstream of the disc stack relative a flow of coolant from the coolant inlet to the coolant outlet; a first axial passage formed in the disc stack and directly fluidly connected to the coolant inlet such that coolant flows axially from the coolant inlet into the first axial passage; and a second axial passage formed in the disc stack between a spline and the disk stack and fluidly connected to the coolant outlet, wherein the second axial passage includes a first end located at a first end of the spline and fluidly connected to an area around the seal and a second end located at a second end of the spline and fluidly connected to the coolant outlet by an annular gap, and wherein the area around the seal is enclosed except for a fluid connection with the first end of the second axial passage.